1N3330A

Single Zener Diodes Overview

The Microchip Technology 1N3330A is a high-power 50 W Zener diode from the JEDEC registered 1N3305 through 1N3350B series. It provides voltage regulation with a nominal Zener voltage of 47 V at a test current of 270 mA. The device features a maximum dynamic impedance of 5.0 Ohms and a maximum reverse current of 10 µA. It operates within a junction temperature range of -65°C to +175°C and utilizes a DO-5 (DO-203AB) package with a hexagonal stud mount.

Single Zener Diodes Feature Summary

• Hermetically sealed welded metal and glass construction for durability
• Internal solder bond design ensuring robust electrical connections
• Standard polarity configuration with anode connected to the case
• Inherently radiation hard characteristics suitable for harsh environments

Single Zener Diodes Applications

• High power voltage regulation circuits
• Military and aerospace electronic systems
• Industrial equipment requiring robust protection

Single Zener Diodes Procurement Notes

Verify the specific tolerance suffix required, as the base part number denotes a +/- 20% tolerance while 'A' indicates +/- 10% and 'B' indicates +/- 5%. Confirm whether standard or reversed polarity is needed, noting that reversed polarity requires an 'R' suffix. Ensure mounting hardware specifications align with the 11/16 inch hexagonal stud and 1/4-28 threads provided in the datasheet.

Single Zener Diodes Selection Notes

Select this component when applications demand high power dissipation capabilities up to 50 watts with adequate heat sinking. Consider the thermal resistance of 2.0°C/W maximum junction to hexagonal base for thermal management calculations. Evaluate the operating temperature range and radiation hardness requirements against the specific environmental conditions of the target system.

Single Zener Diodes Part Context

This component belongs to the 1N3305 through 1N3350B series of 50 Watt Zener diodes manufactured by Microsemi's Scottsdale Division. These devices are designed for broad voltage regulation ranges from 3.9 V to 200 V. The series includes military qualifications such as JAN, JANTX, and JANTXV per MIL-PRF-19500/358, offering various screening levels for critical applications.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 50 W Zener diodes with matching 47 V nominal voltage and DO-5 packaging. Verify thermal resistance and power derating curves match the original design constraints. Check if military qualification prefixes like JAN or JANTX are required for the specific application environment.